Only to add more info.
I asked this in the SDKMAN Slack channel, and they explained me sort of the same the OP mentioned.
But they did gave me some more details about the actual requirements:
@Jesús Gómez The requirements are currently not documented, but boil down to:
* the archive when extracted should create a root folder (e.g. the mvnd archive when extracted creates a root folder named mvnd-0.0.4-darwin-amd64 )
* directly under the extracted root folder, there needs to be a bin folder with the executable binaries
``` - Oliver Weiler
Maybe there is no need to change the original `clojure-tools-...tar.gz` and have an alternative one with these requirements (just for SDKMAN, but who knows?).